"use client"
import { useState, useEffect, useRef } from "react"
import { ContentHeader } from "@/components/custom/content-header"
import { PiLinkSimple } from "react-icons/pi"
import { Bookmark, GraduationCap, Check } from "lucide-react"

interface LinkProps {
	title: string
	url: string
}

const links = [
	{ title: "JavaScript", url: "https://justjavascript.com" },
	{ title: "TypeScript", url: "https://www.typescriptlang.org/" },
	{ title: "React", url: "https://reactjs.org/" }
]

const LinkItem: React.FC<LinkProps> = ({ title, url }) => (
	<div className="mb-1 flex flex-row items-center justify-between rounded-xl bg-[#121212] px-2 py-4 hover:cursor-pointer">
		<div className="flex items-center space-x-4">
			<p>{title}</p>
			<span className="text-md flex flex-row items-center space-x-1 font-medium tracking-wide text-white/20 hover:opacity-50">
				<PiLinkSimple size={20} className="text-white/20" />
				<a href={url} target="_blank" rel="noopener noreferrer">
					{new URL(url).hostname}
				</a>
			</span>
		</div>
	</div>
)
interface ButtonProps {
	children: React.ReactNode
	onClick: () => void
	className?: string
	color?: string
	icon?: React.ReactNode
	fullWidth?: boolean
}

const Button: React.FC<ButtonProps> = ({ children, onClick, className = "", color = "", icon, fullWidth = false }) => {
	return (
		<button
			className={`flex items-center justify-start rounded px-3 py-1 text-sm font-medium ${
				fullWidth ? "w-full" : ""
			} ${className} ${color}`}
			onClick={onClick}
		>
			{icon && <span className="mr-2 flex items-center">{icon}</span>}
			<span>{children}</span>
		</button>
	)
}

export default function GlobalTopic({ topic }: { topic: string }) {
	const [showOptions, setShowOptions] = useState(false)
	const [selectedOption, setSelectedOption] = useState<string | null>(null)
	const [activeTab, setActiveTab] = useState("Guide")
	const decodedTopic = decodeURIComponent(topic)
	const learningStatusRef = useRef<HTMLDivElement>(null)

	useEffect(() => {
		function handleClickOutside(event: MouseEvent) {
			if (learningStatusRef.current && !learningStatusRef.current.contains(event.target as Node)) {
				setShowOptions(false)
			}
		}

		document.addEventListener("mousedown", handleClickOutside)
		return () => {
			document.removeEventListener("mousedown", handleClickOutside)
		}
	}, [])

	const learningOptions = [
		{ text: "To Learn", icon: <Bookmark size={18} /> },
		{ text: "Learning", icon: <GraduationCap size={18} /> },
		{ text: "Learned", icon: <Check size={18} /> }
	]

	const learningStatusColor = (option: string) => {
		switch (option) {
			case "To Learn":
				return "text-white/70"
			case "Learning":
				return "text-[#D29752]"
			case "Learned":
				return "text-[#708F51]"
			default:
				return "text-white/70"
		}
	}

	const selectedStatus = (option: string) => {
		setSelectedOption(option)
		setShowOptions(false)
	}

	return (
		<div className="flex h-full flex-auto flex-col overflow-hidden">
			<ContentHeader>
				<div className="flex w-full items-center justify-between">
					<h1 className="text-2xl font-bold">{decodedTopic}</h1>
					<div className="flex items-center space-x-4">
						<div className="flex rounded-lg bg-neutral-800 bg-opacity-60">
							<button
								onClick={() => setActiveTab("Guide")}
								className={`px-4 py-2 text-[16px] font-semibold transition-colors ${
									activeTab === "Guide"
										? "rounded-lg bg-neutral-800 shadow-inner shadow-neutral-700/70"
										: "text-white/70"
								}`}
							>
								Guide
							</button>
							<button
								onClick={() => setActiveTab("All links")}
								className={`px-4 py-2 text-[16px] font-semibold transition-colors ${
									activeTab === "All links"
										? "rounded-lg bg-neutral-800 shadow-inner shadow-neutral-700/70"
										: "text-white/70"
								}`}
							>
								All links
							</button>
						</div>
					</div>
				</div>

				<div className="relative">
					<Button
						onClick={() => setShowOptions(!showOptions)}
						className="w-[150px] whitespace-nowrap rounded-[7px] bg-neutral-800 px-4 py-2 text-[17px] font-semibold shadow-inner shadow-neutral-700/50 transition-colors hover:bg-neutral-700"
						color={learningStatusColor(selectedOption || "")}
						icon={selectedOption && learningOptions.find(opt => opt.text === selectedOption)?.icon}
					>
						{selectedOption || "Add to my profile"}
					</Button>
					{showOptions && (
						<div
							ref={learningStatusRef}
							className="absolute left-1/2 mt-1 w-40 -translate-x-1/2 rounded-lg bg-neutral-800 shadow-lg"
						>
							{learningOptions.map(option => (
								<Button
									key={option.text}
									onClick={() => selectedStatus(option.text)}
									className="space-x-1 px-2 py-2 text-left text-[14px] font-semibold hover:bg-neutral-700"
									color={learningStatusColor(option.text)}
									icon={option.icon}
									fullWidth
								>
									{option.text}
								</Button>
							))}
						</div>
					)}
				</div>
			</ContentHeader>
			<div className="px-5 py-3">
				<h2 className="mb-3 text-white/60">Intro</h2>
				{links.map((link, index) => (
					<LinkItem key={index} title={link.title} url={link.url} />
				))}
			</div>
			<div className="px-5 py-3">
				<h2 className="mb-3 text-opacity-60">Other</h2>
				{links.map((link, index) => (
					<LinkItem key={index} title={link.title} url={link.url} />
				))}
			</div>
			<div className="flex-1 overflow-auto p-4"></div>
		</div>
	)
}